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How thick does a book need to be for spine text? KDP needs at least 79 pages; IngramSpark allows it from 48 pages for...

KDP rejects a cover file when it does not match Amazon's exact specs for dimensions, resolution, spine width, bleed, color mode, or file type;...

A plain-English guide to print-on-demand book binding: what POD offers indie authors, from perfect-bound paperbacks to case laminate and dust jacket hardcovers, and what...

How to choose between a matte and glossy finish for your book cover, including what KDP and IngramSpark offer and which suits your genre.

A good book cover design brief includes two layers of information: technical specs your designer needs to build the file correctly (trim size, page...

RGB and CMYK are not interchangeable. Here is exactly which colour mode each self-publishing platform requires — and why getting it wrong affects how...

Every major ebook retailer requires a different cover image size, and uploading the wrong dimensions can mean rejection, cropping, or a blurry thumbnail that...

A paperback cover cannot be reused for a hardcover. Hardcovers introduce wrap areas, hinge zones, and different bleed requirements that demand a new cover...

A print book cover template marks where to place artwork, text, and critical elements using trim lines, bleed areas, safe zones, and spine markings.

Bleed is the extra artwork extending beyond the trim line on a print book cover, required by KDP, IngramSpark, and Draft2Digital to prevent white...

Learn how to calculate spine width for your print book cover using the page count, PPI, and cover thickness formula — plus platform-specific tools...